## Subgroup analysis based on 'Control'
madata_cont <- metagen(TE = TE,
seTE = seTE,
data = databin,
studlab = paste(Author),
common = TRUE,
random = FALSE,
method.tau = "DL",
hakn = FALSE,
prediction = FALSE,
sm = "RR", byvar = control)
# or
madata_cont <- update(madata, subgroup = control, bylab = "Control group")
## Subgroup analysis based on 'type of students'
madata_pop <- metagen(TE = TE,
seTE = seTE,
data = databin,
studlab = paste(Author),
common = TRUE,
random = FALSE,
method.tau = "DL",
hakn = FALSE,
prediction = FALSE,
sm = "RR", subgroup = population)
# or
madata_pop <- update(madata, subgroup = population, bylab="Population")